Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006TRAILBLAZER 4WD V8-6.0L VIN HREPAIR AND DIAGNOSISTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2006 Chevrolet TrailBlazer 4WD V8-6.0L VIN H
Scan Tool Data Definitions
2006 Chevrolet TrailBlazer 4WD V8-6.0L VIN HSECTION Scan Tool Data Definitions
SCAN TOOL DATA DEFINITIONS
BCM SCAN TOOL DATA DEFINITIONS
Battery Voltage: The scan tool displays 0.0-16.0 volts. The battery voltage input represents the system voltage measured at the BCM ignition feed input.
GM Part Number: The scan tool displays the 8-digit alphanumeric module part number.
Ignition Accessory: Input from ignition switch Accessory circuit. Used to determine power mode. Hot in ACC and ON.
Ignition 0: Input to the control module from the ignition switch indicating the ignition 0 position. Switch closed (HOT) in ignition switch positions UNLOCK, ACC, ON, and START.
Ignition 1: Input to the control module from the ignition switch indicating the ignition 1 position. Switch closed (HOT) in ignition switch positions ON and START.
Ignition 3: Input to the control module from the ignition switch indicating the ignition 3 position. Switch closed (HOT) in ignition switch position ON.
Julian Date of Build: This is the day of the year that the module was built.
Key in Ignition: Input from ignition switch indicating that the ignition key is inserted into the ignition switch. HOT with key in ignition switch.
Left Rear Door Ajar Sw.: Input from the left rear door/rear cargo showing the state of it.
Right Rear Door Ajar Sw.: Input from the right rear door indicating door status.
SWC Switch Voltage: Indicates the steering wheel controls supply voltage.
SWC Switch Power: Indicates if voltage is supplied to the steering wheel controls.
Year Module Built: This is the year that the module was built.
DDM/FPDM SCAN TOOL DATA DEFINITIONS
Door Ajar Switch: Input from the respective door switch showing the state of it.
LGM SCAN TOOL DATA DEFINITIONS
Liftgate Ajar Switch: Input from the liftgate ajar switch showing the state of it.
Liftglass Ajar Switch: Input from the liftglass ajar switch showing the state of it.
EGM SCAN TOOL DATA DEFINITIONS
Lower Left Ajar Switch: Input from the endgate lower left ajar switch showing the state of it.
Upper Left Ajar Switch: Input from the endgate upper left ajar switch showing the state of it.
Upper Right Ajar Switch: Input from the endgate upper right ajar switch showing the state of it.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.